1. Tardigrade
  2. Question
  3. Biology
  4. The two sub-units of ribosome remain united at a critical ion level of

Q. The two sub-units of ribosome remain united at a critical ion level of

 2613  232 AIPMTAIPMT 2008Cell : The Unit of Life Report Error

Solution:

Ribosomes are very small organelles having a diameter of 150 A - 250 A. Each ribosome is made up of two subunits, a smaller subunit and another larger subunit. These two subunits are associated with the help of Mg2+ ions (at 0.001 M concentration). If the Mg2+ ions concentration is less in cytoplasm, the two units of ribosome separate but when the Mg2+ ions concentration is increased ten times, the two unites and form a dimer.